<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en_US" lang="en_US">
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
<title>HttpCodecUtil xref</title>
<link type="text/css" rel="stylesheet" href="../../../../../../stylesheet.css" />
</head>
<body>
<div id="overview"><a href="../../../../../../../api/org/jboss/netty/handler/codec/http/HttpCodecUtil.html">View Javadoc</a></div><pre>

<a class="jxr_linenumber" name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a class="jxr_linenumber" name="2" href="#2">2</a>   <em class="jxr_comment"> * Copyright 2012 The Netty Project</em>
<a class="jxr_linenumber" name="3" href="#3">3</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="4" href="#4">4</a>   <em class="jxr_comment"> * The Netty Project licenses this file to you under the Apache License,</em>
<a class="jxr_linenumber" name="5" href="#5">5</a>   <em class="jxr_comment"> * version 2.0 (the "License"); you may not use this file except in compliance</em>
<a class="jxr_linenumber" name="6" href="#6">6</a>   <em class="jxr_comment"> * with the License. You may obtain a copy of the License at:</em>
<a class="jxr_linenumber" name="7" href="#7">7</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="8" href="#8">8</a>   <em class="jxr_comment"> *   <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a class="jxr_linenumber" name="9" href="#9">9</a>   <em class="jxr_comment"> *</em>
<a class="jxr_linenumber" name="10" href="#10">10</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a class="jxr_linenumber" name="11" href="#11">11</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT</em>
<a class="jxr_linenumber" name="12" href="#12">12</a>  <em class="jxr_comment"> * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the</em>
<a class="jxr_linenumber" name="13" href="#13">13</a>  <em class="jxr_comment"> * License for the specific language governing permissions and limitations</em>
<a class="jxr_linenumber" name="14" href="#14">14</a>  <em class="jxr_comment"> * under the License.</em>
<a class="jxr_linenumber" name="15" href="#15">15</a>  <em class="jxr_comment"> */</em>
<a class="jxr_linenumber" name="16" href="#16">16</a>  <strong class="jxr_keyword">package</strong> org.jboss.netty.handler.codec.http;
<a class="jxr_linenumber" name="17" href="#17">17</a>  
<a class="jxr_linenumber" name="18" href="#18">18</a>  <strong class="jxr_keyword">import</strong> java.util.Iterator;
<a class="jxr_linenumber" name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> java.util.List;
<a class="jxr_linenumber" name="20" href="#20">20</a>  
<a class="jxr_linenumber" name="21" href="#21">21</a>  <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpCodecUtil.html">HttpCodecUtil</a> {
<a class="jxr_linenumber" name="22" href="#22">22</a>  
<a class="jxr_linenumber" name="23" href="#23">23</a>      <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> validateHeaderName(String name) {
<a class="jxr_linenumber" name="24" href="#24">24</a>          <strong class="jxr_keyword">if</strong> (name == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="25" href="#25">25</a>              <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"name"</span>);
<a class="jxr_linenumber" name="26" href="#26">26</a>          }
<a class="jxr_linenumber" name="27" href="#27">27</a>          <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; name.length(); i ++) {
<a class="jxr_linenumber" name="28" href="#28">28</a>              <strong class="jxr_keyword">char</strong> c = name.charAt(i);
<a class="jxr_linenumber" name="29" href="#29">29</a>              <strong class="jxr_keyword">if</strong> (c &gt; 127) {
<a class="jxr_linenumber" name="30" href="#30">30</a>                  <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a class="jxr_linenumber" name="31" href="#31">31</a>                          <span class="jxr_string">"name contains non-ascii character: "</span> + name);
<a class="jxr_linenumber" name="32" href="#32">32</a>              }
<a class="jxr_linenumber" name="33" href="#33">33</a>  
<a class="jxr_linenumber" name="34" href="#34">34</a>              <em class="jxr_comment">// Check prohibited characters.</em>
<a class="jxr_linenumber" name="35" href="#35">35</a>              <strong class="jxr_keyword">switch</strong> (c) {
<a class="jxr_linenumber" name="36" href="#36">36</a>              <strong class="jxr_keyword">case</strong> '\t': <strong class="jxr_keyword">case</strong> '\n': <strong class="jxr_keyword">case</strong> 0x0b: <strong class="jxr_keyword">case</strong> '\f': <strong class="jxr_keyword">case</strong> '\r':
<a class="jxr_linenumber" name="37" href="#37">37</a>              <strong class="jxr_keyword">case</strong> ' ':  <strong class="jxr_keyword">case</strong> ',':  <strong class="jxr_keyword">case</strong> ':':  <strong class="jxr_keyword">case</strong> ';':  <strong class="jxr_keyword">case</strong> '=':
<a class="jxr_linenumber" name="38" href="#38">38</a>                  <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a class="jxr_linenumber" name="39" href="#39">39</a>                          <span class="jxr_string">"name contains one of the following prohibited characters: "</span> +
<a class="jxr_linenumber" name="40" href="#40">40</a>                          <span class="jxr_string">"=,;: &#92;&#92;t&#92;&#92;r&#92;&#92;n&#92;&#92;v&#92;&#92;f: "</span> + name);
<a class="jxr_linenumber" name="41" href="#41">41</a>              }
<a class="jxr_linenumber" name="42" href="#42">42</a>          }
<a class="jxr_linenumber" name="43" href="#43">43</a>      }
<a class="jxr_linenumber" name="44" href="#44">44</a>  
<a class="jxr_linenumber" name="45" href="#45">45</a>      <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> validateHeaderValue(String value) {
<a class="jxr_linenumber" name="46" href="#46">46</a>          <strong class="jxr_keyword">if</strong> (value == <strong class="jxr_keyword">null</strong>) {
<a class="jxr_linenumber" name="47" href="#47">47</a>              <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> NullPointerException(<span class="jxr_string">"value"</span>);
<a class="jxr_linenumber" name="48" href="#48">48</a>          }
<a class="jxr_linenumber" name="49" href="#49">49</a>  
<a class="jxr_linenumber" name="50" href="#50">50</a>          <em class="jxr_comment">// 0 - the previous character was neither CR nor LF</em>
<a class="jxr_linenumber" name="51" href="#51">51</a>          <em class="jxr_comment">// 1 - the previous character was CR</em>
<a class="jxr_linenumber" name="52" href="#52">52</a>          <em class="jxr_comment">// 2 - the previous character was LF</em>
<a class="jxr_linenumber" name="53" href="#53">53</a>          <strong class="jxr_keyword">int</strong> state = 0;
<a class="jxr_linenumber" name="54" href="#54">54</a>  
<a class="jxr_linenumber" name="55" href="#55">55</a>          <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i &lt; value.length(); i ++) {
<a class="jxr_linenumber" name="56" href="#56">56</a>              <strong class="jxr_keyword">char</strong> c = value.charAt(i);
<a class="jxr_linenumber" name="57" href="#57">57</a>  
<a class="jxr_linenumber" name="58" href="#58">58</a>              <em class="jxr_comment">// Check the absolutely prohibited characters.</em>
<a class="jxr_linenumber" name="59" href="#59">59</a>              <strong class="jxr_keyword">switch</strong> (c) {
<a class="jxr_linenumber" name="60" href="#60">60</a>              <strong class="jxr_keyword">case</strong> 0x0b: <em class="jxr_comment">// Vertical tab</em>
<a class="jxr_linenumber" name="61" href="#61">61</a>                  <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a class="jxr_linenumber" name="62" href="#62">62</a>                          <span class="jxr_string">"value contains a prohibited character '&#92;&#92;v': "</span> + value);
<a class="jxr_linenumber" name="63" href="#63">63</a>              <strong class="jxr_keyword">case</strong> '\f':
<a class="jxr_linenumber" name="64" href="#64">64</a>                  <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a class="jxr_linenumber" name="65" href="#65">65</a>                          <span class="jxr_string">"value contains a prohibited character '&#92;&#92;f': "</span> + value);
<a class="jxr_linenumber" name="66" href="#66">66</a>              }
<a class="jxr_linenumber" name="67" href="#67">67</a>  
<a class="jxr_linenumber" name="68" href="#68">68</a>              <em class="jxr_comment">// Check the CRLF (HT | SP) pattern</em>
<a class="jxr_linenumber" name="69" href="#69">69</a>              <strong class="jxr_keyword">switch</strong> (state) {
<a class="jxr_linenumber" name="70" href="#70">70</a>              <strong class="jxr_keyword">case</strong> 0:
<a class="jxr_linenumber" name="71" href="#71">71</a>                  <strong class="jxr_keyword">switch</strong> (c) {
<a class="jxr_linenumber" name="72" href="#72">72</a>                  <strong class="jxr_keyword">case</strong> '\r':
<a class="jxr_linenumber" name="73" href="#73">73</a>                      state = 1;
<a class="jxr_linenumber" name="74" href="#74">74</a>                      <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="75" href="#75">75</a>                  <strong class="jxr_keyword">case</strong> '\n':
<a class="jxr_linenumber" name="76" href="#76">76</a>                      state = 2;
<a class="jxr_linenumber" name="77" href="#77">77</a>                      <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="78" href="#78">78</a>                  }
<a class="jxr_linenumber" name="79" href="#79">79</a>                  <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="80" href="#80">80</a>              <strong class="jxr_keyword">case</strong> 1:
<a class="jxr_linenumber" name="81" href="#81">81</a>                  <strong class="jxr_keyword">switch</strong> (c) {
<a class="jxr_linenumber" name="82" href="#82">82</a>                  <strong class="jxr_keyword">case</strong> '\n':
<a class="jxr_linenumber" name="83" href="#83">83</a>                      state = 2;
<a class="jxr_linenumber" name="84" href="#84">84</a>                      <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="85" href="#85">85</a>                  <strong class="jxr_keyword">default</strong>:
<a class="jxr_linenumber" name="86" href="#86">86</a>                      <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a class="jxr_linenumber" name="87" href="#87">87</a>                              <span class="jxr_string">"Only '&#92;&#92;n' is allowed after '&#92;&#92;r': "</span> + value);
<a class="jxr_linenumber" name="88" href="#88">88</a>                  }
<a class="jxr_linenumber" name="89" href="#89">89</a>                  <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="90" href="#90">90</a>              <strong class="jxr_keyword">case</strong> 2:
<a class="jxr_linenumber" name="91" href="#91">91</a>                  <strong class="jxr_keyword">switch</strong> (c) {
<a class="jxr_linenumber" name="92" href="#92">92</a>                  <strong class="jxr_keyword">case</strong> '\t': <strong class="jxr_keyword">case</strong> ' ':
<a class="jxr_linenumber" name="93" href="#93">93</a>                      state = 0;
<a class="jxr_linenumber" name="94" href="#94">94</a>                      <strong class="jxr_keyword">break</strong>;
<a class="jxr_linenumber" name="95" href="#95">95</a>                  <strong class="jxr_keyword">default</strong>:
<a class="jxr_linenumber" name="96" href="#96">96</a>                      <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a class="jxr_linenumber" name="97" href="#97">97</a>                              <span class="jxr_string">"Only ' ' and '&#92;&#92;t' are allowed after '&#92;&#92;n': "</span> + value);
<a class="jxr_linenumber" name="98" href="#98">98</a>                  }
<a class="jxr_linenumber" name="99" href="#99">99</a>              }
<a class="jxr_linenumber" name="100" href="#100">100</a>         }
<a class="jxr_linenumber" name="101" href="#101">101</a> 
<a class="jxr_linenumber" name="102" href="#102">102</a>         <strong class="jxr_keyword">if</strong> (state != 0) {
<a class="jxr_linenumber" name="103" href="#103">103</a>             <strong class="jxr_keyword">throw</strong> <strong class="jxr_keyword">new</strong> IllegalArgumentException(
<a class="jxr_linenumber" name="104" href="#104">104</a>                     <span class="jxr_string">"value must not end with '&#92;&#92;r' or '&#92;&#92;n':"</span> + value);
<a class="jxr_linenumber" name="105" href="#105">105</a>         }
<a class="jxr_linenumber" name="106" href="#106">106</a>     }
<a class="jxr_linenumber" name="107" href="#107">107</a> 
<a class="jxr_linenumber" name="108" href="#108">108</a>     <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> isTransferEncodingChunked(<a href="../../../../../../org/jboss/netty/handler/codec/http/HttpMessage.html">HttpMessage</a> m) {
<a class="jxr_linenumber" name="109" href="#109">109</a>         List&lt;String&gt; chunked = m.headers().getAll(HttpHeaders.Names.TRANSFER_ENCODING);
<a class="jxr_linenumber" name="110" href="#110">110</a>         <strong class="jxr_keyword">if</strong> (chunked.isEmpty()) {
<a class="jxr_linenumber" name="111" href="#111">111</a>             <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="112" href="#112">112</a>         }
<a class="jxr_linenumber" name="113" href="#113">113</a> 
<a class="jxr_linenumber" name="114" href="#114">114</a>         <strong class="jxr_keyword">for</strong> (String v: chunked) {
<a class="jxr_linenumber" name="115" href="#115">115</a>             <strong class="jxr_keyword">if</strong> (v.equalsIgnoreCase(HttpHeaders.Values.CHUNKED)) {
<a class="jxr_linenumber" name="116" href="#116">116</a>                 <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">true</strong>;
<a class="jxr_linenumber" name="117" href="#117">117</a>             }
<a class="jxr_linenumber" name="118" href="#118">118</a>         }
<a class="jxr_linenumber" name="119" href="#119">119</a>         <strong class="jxr_keyword">return</strong> false;
<a class="jxr_linenumber" name="120" href="#120">120</a>     }
<a class="jxr_linenumber" name="121" href="#121">121</a> 
<a class="jxr_linenumber" name="122" href="#122">122</a>     <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> removeTransferEncodingChunked(<a href="../../../../../../org/jboss/netty/handler/codec/http/HttpMessage.html">HttpMessage</a> m) {
<a class="jxr_linenumber" name="123" href="#123">123</a>         List&lt;String&gt; values = m.headers().getAll(HttpHeaders.Names.TRANSFER_ENCODING);
<a class="jxr_linenumber" name="124" href="#124">124</a>         <strong class="jxr_keyword">if</strong> (values.isEmpty()) {
<a class="jxr_linenumber" name="125" href="#125">125</a>             <strong class="jxr_keyword">return</strong>;
<a class="jxr_linenumber" name="126" href="#126">126</a>         }
<a class="jxr_linenumber" name="127" href="#127">127</a>         Iterator&lt;String&gt; valuesIt = values.iterator();
<a class="jxr_linenumber" name="128" href="#128">128</a>         <strong class="jxr_keyword">while</strong> (valuesIt.hasNext()) {
<a class="jxr_linenumber" name="129" href="#129">129</a>             String value = valuesIt.next();
<a class="jxr_linenumber" name="130" href="#130">130</a>             <strong class="jxr_keyword">if</strong> (value.equalsIgnoreCase(HttpHeaders.Values.CHUNKED)) {
<a class="jxr_linenumber" name="131" href="#131">131</a>                 valuesIt.remove();
<a class="jxr_linenumber" name="132" href="#132">132</a>             }
<a class="jxr_linenumber" name="133" href="#133">133</a>         }
<a class="jxr_linenumber" name="134" href="#134">134</a>         <strong class="jxr_keyword">if</strong> (values.isEmpty()) {
<a class="jxr_linenumber" name="135" href="#135">135</a>             m.headers().remove(HttpHeaders.Names.TRANSFER_ENCODING);
<a class="jxr_linenumber" name="136" href="#136">136</a>         } <strong class="jxr_keyword">else</strong> {
<a class="jxr_linenumber" name="137" href="#137">137</a>             m.headers().set(HttpHeaders.Names.TRANSFER_ENCODING, values);
<a class="jxr_linenumber" name="138" href="#138">138</a>         }
<a class="jxr_linenumber" name="139" href="#139">139</a>     }
<a class="jxr_linenumber" name="140" href="#140">140</a> 
<a class="jxr_linenumber" name="141" href="#141">141</a>     <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">boolean</strong> isContentLengthSet(<a href="../../../../../../org/jboss/netty/handler/codec/http/HttpMessage.html">HttpMessage</a> m) {
<a class="jxr_linenumber" name="142" href="#142">142</a>         List&lt;String&gt; contentLength = m.headers().getAll(HttpHeaders.Names.CONTENT_LENGTH);
<a class="jxr_linenumber" name="143" href="#143">143</a>         <strong class="jxr_keyword">return</strong> !contentLength.isEmpty();
<a class="jxr_linenumber" name="144" href="#144">144</a>     }
<a class="jxr_linenumber" name="145" href="#145">145</a> 
<a class="jxr_linenumber" name="146" href="#146">146</a>     <strong class="jxr_keyword">private</strong> <a href="../../../../../../org/jboss/netty/handler/codec/http/HttpCodecUtil.html">HttpCodecUtil</a>() {
<a class="jxr_linenumber" name="147" href="#147">147</a>     }
<a class="jxr_linenumber" name="148" href="#148">148</a> }
</pre>
<hr/><div id="footer">This page was automatically generated by <a href="http://maven.apache.org/">Maven</a></div></body>
</html>

